EP 1255240 B1 20050216 - Active matrix electroluminescent display with two TFTs and storage capacitor in each pixel
Title (en)
Active matrix electroluminescent display with two TFTs and storage capacitor in each pixel
Title (de)
Elektrolumineszenzanzeige mit aktiver Matrix mit zwei TFTs und Speicherkondensator pro Bildelement
Title (fr)
Affichage électroluminescent à matrice active avec deux TFTs et condensateur de stockage pour chaque pixel
Publication
Application
Priority
- EP 98902263 A 19980217
- JP 3247497 A 19970217
- JP 23635197 A 19970901
- JP 23635397 A 19970901
Abstract (en)
[origin: EP0895219A1] A display apparatus, that includes current driving type luminescent elements, has a driving system that takes the conduction types of TFTs to control the emission of the luminescent elements into consideration. In order to reduce driving voltage and improve display quality simultaneously, the arrangement is provided such that if the second TFT (30) which performs the "on-off" function of the current for the luminescent element (40) is of an N channel type, the potential of the common power supply line ("com") is lowered below the potential of the opposite electrode ("op") of the luminescent element (40) to obtain a higher gate voltage ("Vgcur"). In this case, if the first TFT (20) connected to the gate of the second TFT (30) is of a P channel type, when using the potential of the potential-holding electrode ("st") at the "on" state as a reference, potentials of the scanning signal ("Sgate") at the lower potential and the common power supply line ("com") are rendered of the same polarities with respect to this potential of the potential-holding electrode ("st"). Therefore, the potential of the image signal ("data") to turn "on" can be shifted within the range of the driving voltage in the display apparatus (1) in the direction to reduce resistances at the "on" states of the first TFT (20) and the second TFT (30) to reduce driving voltage and improve display quality. <IMAGE>
IPC 1-7
IPC 8 full level
G09G 3/32 (2006.01); H01L 27/32 (2006.01); H01L 33/08 (2010.01); H01L 33/26 (2010.01); H01L 33/42 (2010.01); H05B 44/00 (2022.01); G09G 3/00 (2006.01); H01L 51/52 (2006.01)
CPC (source: EP KR US)
G09G 3/30 (2013.01 - KR); G09G 3/3233 (2013.01 - EP US); G09G 3/3266 (2013.01 - EP US); H10K 59/122 (2023.02 - EP US); G09G 3/006 (2013.01 - EP US); G09G 3/3258 (2013.01 - EP US); G09G 2300/0408 (2013.01 - EP US); G09G 2300/0417 (2013.01 - EP US); G09G 2300/0426 (2013.01 - EP US); G09G 2300/0439 (2013.01 - EP US); G09G 2300/0465 (2013.01 - EP US); G09G 2300/08 (2013.01 - EP US); G09G 2300/0809 (2013.01 - EP US); G09G 2300/0842 (2013.01 - EP US); G09G 2300/0847 (2013.01 - EP US); G09G 2300/0876 (2013.01 - EP US); G09G 2310/0254 (2013.01 - EP US); G09G 2310/0256 (2013.01 - EP US); G09G 2310/0262 (2013.01 - EP US); G09G 2310/0283 (2013.01 - EP US); G09G 2310/06 (2013.01 - EP US); G09G 2320/043 (2013.01 - EP US); G09G 2330/021 (2013.01 - EP US); H10K 50/81 (2023.02 - EP US); H10K 50/828 (2023.02 - EP US); H10K 50/86 (2023.02 - EP US); H10K 50/865 (2023.02 - EP US); H10K 59/12 (2023.02 - EP US); H10K 59/1213 (2023.02 - EP US); H10K 59/131 (2023.02 - EP US); H10K 71/135 (2023.02 - EP US); H10K 2102/3026 (2023.02 - EP US)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0895219 A1 19990203; EP 0895219 A4 20010131; EP 0895219 B1 20100616; CN 100341042 C 20071003; CN 100533528 C 20090826; CN 100538790 C 20090909; CN 1217807 A 19990526; CN 1506928 A 20040623; CN 1506929 A 20040623; CN 1506929 B 20100901; CN 1506930 A 20040623; DE 69829084 D1 20050324; DE 69829084 T2 20051229; DE 69841721 D1 20100729; EP 1255240 A1 20021106; EP 1255240 B1 20050216; EP 1336953 A2 20030820; EP 1336953 A3 20031022; EP 1359789 A1 20031105; EP 1359789 B1 20110914; EP 1830342 A2 20070905; EP 1830342 A3 20080604; EP 1830342 B1 20130123; EP 1830343 A2 20070905; EP 1830343 A3 20090311; EP 1830344 A2 20070905; EP 1830344 A3 20090401; EP 1830344 B1 20120704; JP 2008287288 A 20081127; JP 2009187019 A 20090820; JP 3528182 B2 20040517; JP 5018819 B2 20120905; JP 5120141 B2 20130116; KR 100509240 B1 20050822; KR 100509241 B1 20050823; KR 100539291 B1 20051227; KR 100539988 B1 20060110; KR 100541253 B1 20060710; KR 100544821 B1 20060124; KR 100585261 B1 20060602; KR 100586715 B1 20060608; KR 100588271 B1 20060612; KR 20000064918 A 20001106; KR 20040000394 A 20040103; KR 20040000395 A 20040103; KR 20040000396 A 20040103; KR 20050056203 A 20050614; KR 20050103517 A 20051031; KR 20050103518 A 20051031; KR 20050103982 A 20051101; KR 20050104425 A 20051102; TW 491985 B 20020621; TW 578130 B 20040301; US 2002024493 A1 20020228; US 2002097213 A1 20020725; US 2003098827 A1 20030529; US 2004150591 A1 20040805; US 2006273995 A1 20061207; US 2006273996 A1 20061207; US 2006279491 A1 20061214; US 2008246700 A1 20081009; US 2010066652 A1 20100318; US 2010097410 A1 20100422; US 2012299902 A1 20121129; US 6522315 B2 20030218; US 6839045 B2 20050104; US 7221339 B2 20070522; US 7253793 B2 20070807; US 7710364 B2 20100504; US 7880696 B2 20110201; US 8154199 B2 20120410; US 8247967 B2 20120821; US 8354978 B2 20130115; WO 9836407 A1 19980820
DOCDB simple family (application)
EP 98902263 A 19980217; CN 03120503 A 19980217; CN 03120504 A 19980217; CN 03120505 A 19980217; CN 98800149 A 19980217; DE 69829084 T 19980217; DE 69841721 T 19980217; EP 02076495 A 19980217; EP 03076312 A 19980217; EP 03076313 A 19980217; EP 07075432 A 19980217; EP 07075433 A 19980217; EP 07075434 A 19980217; JP 2008206695 A 20080811; JP 2009089815 A 20090402; JP 53136098 A 19980217; JP 9800656 W 19980217; KR 19980708210 A 19981014; KR 20037002329 A 20030217; KR 20037002330 A 20030217; KR 20037002332 A 20030217; KR 20057002798 A 20050218; KR 20057017875 A 20050923; KR 20057017877 A 20050923; KR 20057017878 A 20050923; KR 20057017879 A 20050923; TW 87102170 A 19980217; TW 90129069 A 19980217; US 15581308 A 20080610; US 17122498 A 19981016; US 201213492586 A 20120608; US 26783402 A 20021010; US 50545006 A 20060817; US 50545706 A 20060817; US 50545906 A 20060817; US 60677509 A 20091027; US 61822909 A 20091113; US 62561703 A 20030724; US 6889002 A 20020211